Automatic milling-machine.



No. 636,9l5. Patented Nov. l4, I899.

0. MEHGENTHALER.

AUTOMATIC MILLING MACHINE.

(Application filed May 11Y 1893.) (No Model.) 3 Sheets8heat l,

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'm. 636,9!5. Patented Nov. I4, I899. 0. MEBGENTHALER. AUTOMATIC MILLINGMACHINE.

(Application filed May 11, 189B.)

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N0. 636,9I5. Patented Nov. [4, I899.

I 0. MERGENTHALER.

AUTOMATIC MILLING MACHINE.

(Application filed May 11, 1898.) (No Model.) 3 Sheets8heet 3.

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will be presently described.

UNITED STATES PATENT FFIGE.

OTTMAR MERGENTHALER, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE OTT.MERGENTI-IALER COMPANY, OF SAME PLACE.

AUTOMATIC MILLING-MACHINE.

sPEoIFicATIoN forming part of Letters Patent No. 636,91 5, datedNovember 14,- uses.

Application filed May 11, 1398.

To all whom it may concern.-

Be it known that I, OTTMAR MERGENTHA- LER, a citizen of the UnitedStates, residing at Baltimore, in the State of Maryland, have inventedcertain new and. useful Improvements in Automatic Milling-Machines, ofwhich the following is a specification.

My invention relates to automatic millingmachines, and more particularlyto that class of milling-machines wherein the blanks to be operated uponare stored in a magazine, from which they are fed in a series or gang tobe operated upon by the cutter or cutters.

Although it will be understood that my improved machine is capable ofgeneral application wherever it may be desired to operate upon a seriesof blanks, it is shown and described herein as employedin connectionwith the manufacture of matrices for use in linotype-machinessuch, forexample, as those shown and described in Letters Patent of .the

United States Nos. 436,531 and 436,532, granted to me on the 16th day ofSeptember, 1890.

My invention relates,.first, to the construction and arrangement of amagazine or holder in which the work or blanks maybe stored in series organgs and from which they may be moved in series or gangs into relationwith the cutting mechanism and in the further provision of a secondholder or magazine adapted to receive the work or blanks after they havebeen operated upon, together with suitable shifting means for saidholders or magazines, and, second, to the construction and arrangementof feeding devices whereby the work or blanks are first removed from themagazine and then pressure applied to them while they are being operatedupon by the cutting mechanism, and,finally,whereby they are delivered inthe second magazine or holder.

To these ends my invention consists in the construction and combinationof parts which Referring to the drawings, Figure 1 is a top plan view ofmy improved milling-machine. Fig. 2 is a side view of the machine,partly broken away and partly in section, on the line 2 2 in Fig. 1.Fig. 3 is an end View of my machine, partly in section, on their regularsection-line 3 .3 in Fig. 2. Fig. 4 is a dia-= Serial No. 680,400. (Nomodel.)

grammatic view of a blank which may be op erated upon in my improvedmachine.

The framework A is or may be of any desired character, provided onlythat it has suf-- I number of transverse pockets B, in which the blanksare stored in gangs or series. Similarly the magazine 0 is adapted toslide in the guideway A and is also provided with a se= ries oftransverse pockets 0, in which the finished blanks are received afterthey have been acted upon by the cutting mechanism. It will be seen froman inspection of Fig. 2 that the guideway A is located in the frame A ata lower level than the guideway A, and that consequently the uppersurface of the magazine or holder 0 is located below the path pursued bythe gang of blanks X after they have been acted upon by the cuttingmechanism in such manner that when the gang of blanks is relieved fromthe pressure of the feeding devices it will drop into the pocket ofthe.magazine 0 below it. This positionof the magazine C permits of itsready removal from the machine at any period of the operation, as it isnot in engagement with the clamping jaw or piece L, hereinafter to bedescribed, and further secures the quick disengagement of the gang ofblanks from the feeding and clamping devices. for imparting astep-by-step movement to the magazines or holders B and C will behereinafter described.

Power is imparted to the machine by the fast and loose pulleys F fromany suitable source of power. upon the driving-shaft F, suitablyjournaled in the frame of the machine and carrying the band-pulley F andthe worm F The worm F meshes into and turns the worm-gear F fast uponthe counter-shaft F and imparts The means The pulleys F are locatedcontinuous motion thereto. The countershaft F is suitably journaled inthe frame of the machine and has fast thereon a second worm F whichmeshes into and turns the worm-gear G, imparting continuous motionthereto. The worm-gear G is fast upon the cam-shaft H, which is suitablyjournaled in the frame of the machine and which carries the feeding andclamping cams H and H hereinafter to be described.

The magazine B is provided at its lower surface with the ratchet-teeth BMounted in the frame A of the machine is the rockshaft D, having fastupon it the roller-arm D so located that it is acted upon by the stud G,carried by the worm-gear G at each rotation of the cam-shaft II, therebyeffecting the rocking of the shaft D. The rock-shaft D also carries aweighted arm D which restores the rock-shaft to its normal position.Also fast upon the rock-shaft D is the arm D, which carries at its outerend the spring-pressed pawl D so located as to engage with theratchet-teeth B on the magazine B in such manner that the actuation ofthe rock-shaft D efiect-s the longitudinal movement of the magazine B,the ratchet-teeth B thereon being so located that the magazine 13 ismoved a distance of one pocket for each rotation of the shaft H.Attached to the magazine 13 and passing over a roller 13 on the frame Ais the cord 13, attached to the weight B in such manner that thetendency of the weight is to oppose the forward step-by-step actionpreviously described. A spring-pressed pawl D attached to the frame ofthe machine and also engaging with the ratchet-teeth B prevents thebackward movement of the magazine B. A cord D, attached to thespring-pressed pawls D and D affords a convenient means for retractingthese pawls from engagement with the ratchet-teeth B and permits thereturn of the magazine B by its connection to the weight 13 and itsreadjustment. The magazine or holder C is similarly actuated and given astep-by-step movement by means of the arm E, fast on the rock-shaft Dand provided with the spring-pressed pawl E, which engages with theratchet-teeth 0 formed at the bottom of the magazine or holder C, asclearly shown in dotted lines in Fig. A spring-pressed retaining-pawl Eis also provided for the ratchet-teeth C and similarly a cord C isattached to the magazine 0 and passes over a pulley C to a weight. Itwill be seen that by the mechanism just described a step-by-stepmovement equal in extent to the width of one of the pockets will beimparted to both magazines B and C at each movement of the rook-shaft D,the parts being so arranged that at the proper time a fresh gang orseries of matrices in the magazine B is brought into position to beacted upon by the feeding devices and an empty pocket 0 brought intoposition to receive the gang of blanks after they have been operated on.

The arrangement and means for actuating the cutting mechanism are or maybe as follows: Motion is imparted from the band-pulley F previouslyreferred to, by means of the belt I, to the band-pulley 1, fast upon thehorizontal spindle I suitably journaled in the frame of the machine andcarrying at its inner end the face-cutter1 If it be desired to employinstead of a face-cutter an edge-cutter, the parts are arranged as shownin dotted lines in the various figures. A band-pulley J is made fast tothe spindle 1 which is rotated by the means just described, and from theband-pulley J a belt J passes up and over the guide-pulleys J around thehorizontal band-pulley J which is fast upon the Vertical arbor J, onwhich an edge-cutter may be mounted in the well-known manner to act asdesired upon the series of blanks.

The feeding and clamping devices are arranged and constructed in thefollowing manner: The jaw or feed-piece K is arranged to slide in theguideway A on the frame A in such manner that it registers with andpasses through one of the pockets B of the magazine orholder B.Similarly the jaw orclamping-piece L is arranged to slide in theguideway A on the frame A in such manner that it coincides with and isadapted to pass through one of the pockets 0 of the magazine or holderC. The proper motion is imparted to the jaworfeed-piece K by the leverK, which is pivoted at K in the frame A and connected to the feed-pieceK by the engagement of the pin K with the slot K formed in the end ofthe lever. The lower end of the lever K is provided with a weight K, thenormal tendencyof which is to move the lever K inward, and with it thefeed-piece K. This action of the weigbtK is, however, resisted andcontrolled by the action of the cam H previously referred to, which actsupon the roller K of the lever K. Similarly the jaw or clamping-piece Lis moved by the lever L, which is pivoted at L to the frame of themachine and is connected to the clampingpiece L by the slot L Theinnerend of the lever L is provided with the weight L, the tendency ofwhich is to move the clamping-piece L inwardly. This tendency of theweight L is, however, resisted and controlled by the cam ll, previouslyreferred to, which acts upon the roller L on the lever L.

The shaping and relative timing of the two cams H and 11 substantiallyeffects the following operation of the feed-piece K and clamping-piece Lin the rotation of the camshaft H: lVhen the projection 11 of the cam Hacts upon the roller K of the lever K, the jaw or feed-piece K will beretracted to its extreme outward position, at which time the shifting ofthe magazine B is effected by the mechanism already described. As thecam turns farther and moves the projection H out of relation with theroller K the weight K effects the inward movement of the feedpiece K insuch manner as to shift the gang of ese,915

matrices Xfrom the pocket into the guideway A where it is clamped andheld by the jaw or clamping-piece L, in connection with the jaw orfeed-piece K. Similarly the clamping-piece L is .given its extremeoutward position by the engagement of the piece H on the cam H with theroller L on the lever L, and during this interval the magazine 0 isshifted the distanceof'one pocket, in the manner previously described.-As the cam-shaft H turns farther the roller L will pass over the projection 1-1 of the cam H, and the weight L will cause the extreme inwardmovement of the clamping-piece L, through the pocket 0 of the magazine0, in to position to meet the gang of blanks X and to firmly clamp thembetween the clamping-piece L and the feedpiece K. In this position ofthe feed-piece K and clamping-piece L both of the pieces are pressedinwardly by the weights K andL and serve to firmly clamp and hold thematrices bylateral pressure during their passage by and in relation tothe cutting mechanism. After the gang of blanks has been clamped in themanner just described the further action of feeding the blanks past thecutting mechanism is accomplished as follows: The periphery of the cam His so shaped that from this point onward it serves to steadily retractthe clamping-piece L, and similarly the periphery of the cam H is soshaped that'during this operation the weight K is permitted to move thelever K and advance the feed-piece K, thereby always maintaining thepressure of the feed-piece K upon the gang of blanks as they are fed bythe cutting mechanism. This shapingand relative arrangement of the camsis clearly shown in Fig. 2, wherein it will be seen that during thisoperation the roller K is not in contact with theperiphery of the cam Hthe cams H and H rotating in the direction of the arrow. When the gangof blanks has been carried by the cutting mechanism and is broughtimmediately over the pocket 0 in the magazine or holder 0, the piece Hof the cam H, acting upon the roller L and the piece H of the cam Hacting on the roller K relieves the pressure of the two jaws on the gangof blanks and permits them to drop into a pocket 0, and at the same timethe clampingpiece Land the feed-piece K are returned to their outermostpositions, as previously described,and the parts are in position for afresh operation. It will be apparent that as a result of the operationjust described the blanks are -discharged from the magazine withoutbeing pressed or confined therein and that they are subjected topressure subsequently and before they reach the cutting mechanism.

Itis sometimes desirable to remove the magazine or holder 0 from themachine even durpreviously described, below the clampingpiece L in theguideway A in which it may be moved, when it is desired, simply by thedisengagement of the pawls E and E previously described. It will be seenthat the magazine B may be longitudinally shifted when the jaw orfeed-piece K is in its extreme outermost position and not in engagementwith one of the pockets B. To effect the longitudinal movementofeitherof the magazines or holders, all that is necessary is thedisengagement of the pawls previously described, when the weights B willact to move the magazine longitudinally.

Having now described the construction and arrangement of the differentparts, their operation will be understood to proceed in the followingmanner: Assuming, for example, that it is desired to act upon blanks X,as shown in Fig. 4, and to remove therefrom the bur or projection X,these blanks may be stored in gangs or series in the pockets B of themagazine B, which is then set, in the manner previously described, so asto bring the first pocket B in registration with the guideway A At thesame time the magazine 0 is set so as to bring its first pocket 0 insimilar position. The machine is then started, and the feed-piece K willact to move the gang of blanks X from the pocket 13 into the guideway Awherein the blanks are seized and tightly clamped between the feed-pieceK and the clamping-piece L in the manner previously described. As thecam-shaft H continues its rotation the cams H and H and the weights Land K efiect the shifting of the gang of blanks past the cutter 1 whichremoves from the blanks X the bur or fin X, in the manner clearly shownin Fig. 1. When the gang of blanks has been brought into position overthe pocket 0, the pressure of the jaws L and K is relieved and theblanks drop into the pocket. The clamping-pieceL and the feed-piece Kthen resume their extreme outward positions, at which time the holdersor magazines B and O are each shifted the space of one pocket by thepawl-andratchet teeth mechanism previously described, when the operationmay be repeated as before. It will be understood that if it is desiredto cut into the work with an edgecutter instead of a face-cutter theface-cutter may be applied to the vertical spindle J (shown in dottedlines,) the other operations of shifting the mechanism and feeding andclamping the work being the same in both instances.

Although I have shown and described a specific form of mechanism, itwill be understood that many changes maybe made therein withoutdeparting from the spirit of my invention. Thus, for example, mechanicalequivalents may be substituted, such as the provision of springs inplace of the weights herein employed. The character, number, andlocation of the cutters may be varied and other changes made, whichwould still be comprised within the scope of my invention.

4 acacia It will be further understood that the devices herein describedmay be employed in connection with single, pieces instead of blanks inseries or gangs, and, in fact, to any work which may be grasped and heldby the clamping-jaws.

Having described my invention, What I claim, and desire to secure byLetters Patent of the United States, is-

1. In a milling-machine, the combination with a suitably-actuatedcutter, of two movable magazines or holders, one of which is adapted tohold the blanks to be acted upon, and the second of which is adapted toreceive the blanks from the cutter, of mechanism for moving themagazines intermittently, and mechanism for feeding the blanks from onemagazine to the cutter and to the other magazine.

2. In a milling-machine, the combination with a suitably-actuatedcutter, of two substantially horizontal guideways, magazines adapted toslide in said guideways, means for intermittently moving said magazines,and means for carrying blanks from one of said magazines to the cutterand delivering said. blanks to the other magazine.

3. In a milling-machine, the combination with a suitably-actuatedcutter, of two parallel guideways, and a third guideway at right anglesthereto, magazines arranged to slide in said parallel guideways, and aslide in said rightangled guideway adapted to carry blanks from one ofsaid magazines past the cutter to the other magazine.

4:. In a milling-machine, the combination with two guideways, a magazineprovided with compartments sliding in each guideway, means for normallyurging said magazines in one direction, means for giving said magazinesa step-by-step movement in the opposite direction, a milling-cutter, andmeans for moving blanks from one of said magazines to the cutter anddelivering them to the other magazine.

5. In a milling-machine, the combination with a suitably-actuated cutterand a guideway adjacent thereto, of two clamping-jaws sliding in saidguideway, means for operating said jaws to yieldingly clamp a blank andsimultaneously move said blank to the cutter, a magazine for blanks, andautomatic means for delivering blanks from said magazine to said jaws.

6. In a milling-machine, the combination with two parallel guideways andmagazines movable therein, of a transverse guideway, two clamping-jawsmovable in said transverse guideway, a cutter adjacent to said guideway,and means for moving said jaws relatively to clamp and release the workand for moving said jaws simultaneously while the work is clamped tocarry the same to the cutter.

7. In a milling-machine, the combination with a suitably-actuated cutterand a guideway for directing the work to said cutter, of two jawssliding in said guideway, means for normally urging said jaws yieldinglytoward each other to clamp the work, means for moving said jawssimultaneously to carry the work to the cutter while it is so clamped, amagazine for blanks, and automatic means for delivering blanks from saidmagazine to said jaws 8. In a milling-machine, the combination with asuitably-actuated cutter, and a guideway for directing the work to saidcutter, of a feedingjaw sliding in said guideway, a horizontal magazinemovable transversely to said guideway and in the same plane therewith,and a second horizontal magazine movable transversely to said guidewayand arranged in a plane below said guideway, the said feeding jaw beingadapted to move through the first-n amed magazine and to carry work fromsaid magazine past the cutter and into position over said secondmagazine, sub stantially as described.

9. In a milling-machine, the combination with a suitably-actuatedcutter, and a guideway for directing blanks thereto, of two magazinesmovable transversely to said guideway, two feeding-jaws in saidguideway, levers for operating said jaws, cams for moving said jaws awayfrom each other, and, means for yieldingly moving said jaws toward eachother when the cams permit, said jaws being controlled by said operatingmeans to yieldingly grasp the work, then carry it to the cutter andfinally release the work, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

OTT. MERGENTI-IALER.

Witnesses:

WILLIAM H. BERRY, MURRAY HANSON.

